Index: Ringtoets.sln
===================================================================
diff -u -r6fa2894cc05c07064f544e3f61c53d5611845340 -r9c07cee1e1a14a24e2d949bf9b32f294f0988f1f
--- Ringtoets.sln	(.../Ringtoets.sln)	(revision 6fa2894cc05c07064f544e3f61c53d5611845340)
+++ Ringtoets.sln	(.../Ringtoets.sln)	(revision 9c07cee1e1a14a24e2d949bf9b32f294f0988f1f)
@@ -1472,11 +1472,6 @@
 		{C90B77DA-E421-43CC-B82E-529651BC21AC} = {C90B77DA-E421-43CC-B82E-529651BC21AC}
 	EndProjectSection
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Ringtoets.Common.IO.TestUtil.Test", "Ringtoets\Common\test\Ringtoets.Common.IO.TestUtil.Test\Ringtoets.Common.IO.TestUtil.Test.csproj", "{2F270B08-018A-44A7-875A-3E9B4DC3294A}"
-	ProjectSection(ProjectDependencies) = postProject
-		{C90B77DA-E421-43CC-B82E-529651BC21AC} = {C90B77DA-E421-43CC-B82E-529651BC21AC}
-	EndProjectSection
-EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Ringtoets.Common.IO.TestUtil", "Ringtoets\Common\test\Ringtoets.Common.IO.TestUtil\Ringtoets.Common.IO.TestUtil.csproj", "{33508D7C-1602-4C0D-8503-73AAE98C19E5}"
 	ProjectSection(ProjectDependencies) = postProject
 		{C90B77DA-E421-43CC-B82E-529651BC21AC} = {C90B77DA-E421-43CC-B82E-529651BC21AC}
@@ -3717,14 +3712,6 @@
 		{3DEC1E30-0804-4BC9-8D04-4D7B4854E21B}.Release|x86.Build.0 = Release|x86
 		{3DEC1E30-0804-4BC9-8D04-4D7B4854E21B}.ReleaseForCodeCoverage|x86.ActiveCfg = ReleaseForCodeCoverage|x86
 		{3DEC1E30-0804-4BC9-8D04-4D7B4854E21B}.ReleaseForCodeCoverage|x86.Build.0 = ReleaseForCodeCoverage|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.CreateInstaller|x86.ActiveCfg = Release|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.CreateInstallerWithDemoProject|x86.ActiveCfg = Release|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.Debug|x86.ActiveCfg = Debug|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.Debug|x86.Build.0 = Debug|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.Release|x86.ActiveCfg = Release|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.Release|x86.Build.0 = Release|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.ReleaseForCodeCoverage|x86.ActiveCfg = ReleaseForCodeCoverage|x86
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A}.ReleaseForCodeCoverage|x86.Build.0 = ReleaseForCodeCoverage|x86
 		{33508D7C-1602-4C0D-8503-73AAE98C19E5}.CreateInstaller|x86.ActiveCfg = Release|x86
 		{33508D7C-1602-4C0D-8503-73AAE98C19E5}.CreateInstallerWithDemoProject|x86.ActiveCfg = Release|x86
 		{33508D7C-1602-4C0D-8503-73AAE98C19E5}.Debug|x86.ActiveCfg = Debug|x86
@@ -4055,7 +4042,6 @@
 		{408F6A6B-7BF7-4F59-A5D4-893A777921D3} = {EE8D5A6C-4871-452A-A69B-F04E374D715E}
 		{AA3AB46F-1664-40C4-A620-A12513184BD4} = {79419C3E-046C-4DC1-8C69-F14911F22C75}
 		{3DEC1E30-0804-4BC9-8D04-4D7B4854E21B} = {1C1E8754-CF61-4858-9CEE-3E5DE344474F}
-		{2F270B08-018A-44A7-875A-3E9B4DC3294A} = {B5F4F5A5-FD36-405D-ABA1-56C270207C8F}
 		{33508D7C-1602-4C0D-8503-73AAE98C19E5} = {B5F4F5A5-FD36-405D-ABA1-56C270207C8F}
 	EndGlobalSection
 	GlobalSection(TextTemplating) = postSolution
Index: Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs
===================================================================
diff -u -r19c6f79760da1309b849ed421990431f969c4f78 -r9c07cee1e1a14a24e2d949bf9b32f294f0988f1f
--- Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs	(.../CalculationConfigurationReader.cs)	(revision 19c6f79760da1309b849ed421990431f969c4f78)
+++ Ringtoets/Common/src/Ringtoets.Common.IO/Readers/CalculationConfigurationReader.cs	(.../CalculationConfigurationReader.cs)	(revision 9c07cee1e1a14a24e2d949bf9b32f294f0988f1f)
@@ -167,14 +167,11 @@
                 throw new ArgumentException($"'{nameof(mainSchemaDefinition)}' does not reference the default schema '{defaultSchemaName}'.");
             }
 
-            var combinedXmlSchemaDefinition = new CombinedXmlSchemaDefinition(
-                mainSchemaDefinition,
-                nestedSchemaDefinitions.Concat(new[]
-                                       {
-                                           new KeyValuePair<string, string>(defaultSchemaName, Resources.ConfiguratieSchema)
-                                       })
-                                       .ToDictionary(kv => kv.Key, kv => kv.Value));
+            IDictionary<string, string> extendedNestedSchemaDefinitions = new Dictionary<string, string>(nestedSchemaDefinitions);
+            extendedNestedSchemaDefinitions.Add(defaultSchemaName, Resources.ConfiguratieSchema);
 
+            var combinedXmlSchemaDefinition = new CombinedXmlSchemaDefinition(mainSchemaDefinition, extendedNestedSchemaDefinitions);
+
             try
             {
                 combinedXmlSchemaDefinition.Validate(document);
Fisheye: Tag 9c07cee1e1a14a24e2d949bf9b32f294f0988f1f refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.IO.TestUtil.Test/Properties/AssemblyInfo.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Fisheye: Tag 9c07cee1e1a14a24e2d949bf9b32f294f0988f1f refers to a dead (removed) revision in file `Ringtoets/Common/test/Ringtoets.Common.IO.TestUtil.Test/Ringtoets.Common.IO.TestUtil.Test.csproj'.
Fisheye: No comparison available.  Pass `N' to diff?